Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
224	CHEMICAL TECHNICIANS	205
235	TECHNICIANS, N.E.C.	105	7
448	SUPERVISORS, CLEANING AND BUILDING SERVICE WORKERS	28
453	JANITORS AND CLEANERS	16,848	5,746
575	ELECTRICIANS	65
633	SUPERVISORS, PRODUCTION OCCUPATIONS	559
679	BOOKBINDERS	716	239
719	MOLDING AND CASTING MACHINE OPERATORS	2,644	187
727	SAWING MACHINE OPERATORS	8,242	2,061
734	PRINTING MACHINE OPERATORS	16,149	1,263
735	PHOTOENGRAVERS AND LITHOGRAPHERS	72	18
744	TEXTILE SEWING MACHINE OPERATORS	868	868
756	MIXING AND BLENDING MACHINE OPERATORS	363
769	SLICING AND CUTTING MACHINE OPERATORS	1,762	1,020
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	438	140
779	MACHINE OPERATORS, NOT SPECIFIED	3,377	257
783	WELDERS AND CUTTERS	91
797	PRODUCTION TESTERS	91
798	PRODUCTION SAMPLERS AND WEIGHERS	819
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	65
888	HAND PACKERS AND PACKAGERS	425
TOTAL		53,932	11,806

*(1) The estimates for each occupation apply across the surveyed industries in which the agent was observed. Not all industries were surveyed, and not all agents were observed in all surveyed industries. (2) When using the estimates, standard errors associated with estimates should be considered. (3) Potential exposures to a chemical agent are categorized as actual (i.e., the surveyor observed the use of the specific agent) or tradename (i.e., the surveyor observed the use of a tradename product known to contain the specific agent). The estimates presented in the table combine both categories.